-We are trying to follow this paper and create a similar resin.
-The only differences are that we are using a 1:1 volume ratio of PEGDA and PEG (50% each by volume), are using PEG 400 instead of PEG 300 and are printing on a Titan 1 instead of a Form 1+.
A summary of the study is, they mix different ratios of polyethylene glycol diacrylate (PEGDA) and add 1% (w/v) of diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide (DPPO), let them mix for 8 hours, add two different drugs, and print them. That is the basics, but there is a lot more information in the paper linked.
-Here is an imgur album since new members are limited to one picture per post.
-Here is what we are trying to print and the settings in Creation Workshop.
Image 1: Creation Workshop Cube
Image 2: Creation Workshop Settings
The cube is 1cm all around and has an X, Y and Z on the sides that are the positive axis in Creation Workshop. The other sides are flat with no impression.
-This object has been printed successfully before using the 3DM-ABS and all prints were done using the small build plate.
Image 3: ABS Cube
-All the prints besides the successful 3DM-ABS cube have been done in a hard vat. The 3DM-ABS was done in a soft vat.
-As another side note, we believe that this resin will cure in the Titan 1 printer. An experiment was set up using the UV light below and both the custom resin and 3DM-ABS cured successfully.
Image 4: UV Lamp
—Results from different efforts using custom resin:
Image 5: Print 1
Image 6: Kudo3D Config 1
The first print came out to be a glob of mush, even though it still cured. This picture is after breaking it apart a couple times to see how flexible it was. This print did still to the build plate.
-Prints 2 and 3:
Image 7: Print 2 and 3
Image 8: Kudo3D Config 2
Both prints used the new config above (and so do the rest of the prints) but the one on the left (print 2) used the newer perforated build plate while the one on the right (print 3) used the older solid build plate. Print 2 did not stick to the build plate while print 3 did. Blue dye was also added as an idea to prevent light bleeding.
Image 9: Print 4
Image 10: Print 4 Low View
Very similar to print 2 and also used the same config, I think it did stick to the build plate for the first couple layers but did eventually fall off. The only difference with this print is that instead of using white light from the projector, a setting in Creation Workshop was changed so that it would shine a blue light.
Image 11: Print 5 Vat Picture 1
Image 12: Print 5 Vat Picture 2
Image 13: Print 5
Image 14: Print 5 Low View
Here is the latest print. Went back to using white light and still using the same config files since prints 2 and 3. Decided to watch this print a little more closely so that I could take some pictures and make some observations during the printing process. This print did stick to the build plate for the first few layers but did eventually fall off.
Not sure what steps to take next, or if it is even possible to get a print with this resin. The images of the final prints from the paper that is being followed show very good prints. It seems like there is a lot of light bleeding but I am not sure how to correct this. There is also the difference in the soft and hard vats between the successful 3DM-ABS cube and the new prints but I don’t think it would make that much of a difference.
Any advice would be greatly appreciated.